there are 104 power plants in the u.s. including two on the west coast. the closest reactor to the bay area is the diablo canyon nuclear power plant located near san luis obispo. it's said it's unlikely what happened in japan would happen here. >> as you look at it from a risk perspective, it's very small, very, very low. each of those plants on the west coast has been designed to withstand earthquakes as well as tsunamis. >> he also added it's too early to know how much radiation was released as a result of the explosion in japan. officials in california are still assessing the damage caused by the tsunami that hit the coast yesterday morning. governor jerry brown declared a state of emergency for santa cruz and san mateo counties, saying the ocean surf from the tsunami waves put infrastructure and public safety in extreme peril. kimberly tere is in santa cruz where the harbor remains closed tonight. kimberly? >> reporter: diane, you can see cleanup is slowly winding down for the day here. we are told that they are only going to work until it gets dark h